S-97345A613 5/16"-18 ASME B18.3 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction
- Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for reliable load-bearing performance
- Precision Class 3A thread fit ensures secure, vibration-resistant fastening in demanding applications
- Knurled socket head with hex drive provides superior grip and torque transmission during installation
- Extended 2 1/8" shoulder length offers stable component alignment and rotational support
- Industry-standard compliance with ASME B18.3 specifications for guaranteed interchangeability
- Environmental regulation compliance with RoHS 3 and REACH for safe use in regulated industries
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers critical performance where precision alignment meets corrosive environments. The 5/16"-18 UNC coarse thread with Class 3A fit maintains tight tolerances in high-vibration machinery, while the extended 2 1/8" shoulder provides accurate component positioning in assemblies requiring rotational movement. The knurled socket head with hex drive ensures secure tool engagement, preventing slippage during torque application. Ideal for precision equipment, manufacturing fixtures, and conveyor systems, this industrial fastener solves alignment challenges while offering the corrosion resistance needed for food processing, marine, and chemical applications where moisture and chemicals degrade inferior materials.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit and precise shoulder dimensions (diameter tolerance: -0.004" to -0.002", length tolerance: -0.005" to 0.005"). Thread specifications conform to UNC coarse thread standards with 5/16"-18 threading. Complies with ASME B18.3 dimensional requirements and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substance compliance.
